The dried bark of Eucommia ulmoides Oliv. It is flat, flaky or rolled, with different sizes and thicknesses, generally about 3 ~ 10 mm thick and 40 ~ 100 cm long. The outer surface is grayish brown and rough, with irregular longitudinal cracks and oblique square transverse cracks, and sometimes light gray lichen spots can be seen. Slight gas, slightly bitter taste, chewing with colloidal residue.
Growth habit of Eucommia ulmoides Oliv;
Eucommia ulmoides Oliv Like warm and humid climate and sunny environment, can resist the cold, and can survive normally at -30℃. It can be cultivated in most parts of China and has strong adaptability. There is no strict requirement on the choice of soil, but loam with deep, loose, fertile, moist and well-drained soil layer is the most suitable.
The growth rate of Eucommia ulmoides Oliv. The initial development is slow, and the rapid growth period appears in 7-20 years. After 20 years, the growth rate is decreasing year by year. After 50 years, the growth of tree height basically stopped, and the plants naturally withered.
Eucommia ulmoides grows in low mountains, valleys or sparse forests with low slopes at an altitude of 300-500 meters. The choice of soil is not strict, and it can grow on barren red soil or rocky cliffs.
Baidu encyclopedia-Eucommia ulmoides